Advertisements
Advertisements
Question
Iron rims are heated before they are fixed on the wooden wheels. Explain the reason.
Advertisements
Solution
The wooden wheels of a bullock-cart are fitted with iron tyres. To ensure a tight fit, the tyre is made slightly smaller in diameter than the wheel. The tyre is first heated due to which it expands. The heated tyre is then fitted on the wheel. When the tyre cools, it contracts and makes a tight fit on the wheel.
APPEARS IN
RELATED QUESTIONS
Write true or false for a given statement.
Kerosene contracts on heating.
Fill in the blank
The temperature of boiling water is _______
Select the correct alternative
The temperature of pure melting ice is
Select the correct alternative
Which of the statement is correct
What do you understand by thermal expansion of a substance ?
Why is a cement floor laid in small pieces with gaps in between?
State one application of thermal expansion of liquids.
State which expands more, when heated to the same temperature : solid, liquid or gas ?
Name a solid which is a good conductor of heat.
Match the following
| 1. | Solid to liquid | a. | Condensation |
| 2. | Liquid to gas | b. | Deposition |
| 3. | Gas to solid | c. | Melting |
| 4. | Gas to liquid | d. | Vaporization |
